Option for Changing the Color Depth (Bit Depth) in Project64 (v2.x)

[DeriLoko3]

I know that Nintendo 64 uses 2,097,152 possible colors (21-bit depth) on the screen, but it uses 16,777,216 colors (24-bit color depth). I think to myself, "Does Nintendo 64 actually run a 21-bit depth?" So in Project64, I want to change the bit depth into a different bit depth. For example, I want to change the bit depth from a 24-bit depth to a 21-bit depth.